Disassembling and assembling device for high-pressure adjusting air valve core of turboset

Abstract

The utility model relates to the technical field of disassembling and assembling devices, in particular to a steam turbine unit high-pressure adjusting air valve element disassembling and assembling device which comprises a valve element, the valve element comprises a valve rod, a valve nut and a valve disc, the valve nut and the valve disc are connected to the outer side of the valve rod in a sleeved mode, and the valve nut is in threaded connection with the valve disc. The fixing device is used for fixing the valve nut, the dismounting and mounting device is used for dismounting and mounting the valve disc, the dismounting and mounting device comprises a dismounting and mounting ring and a fixing pin, the dismounting and mounting ring sleeves the outer side of the valve disc, the fixing pin is used for fixing the valve disc and the dismounting and mounting ring, a knocking lug is fixedly arranged on the outer side of the dismounting and mounting ring, and inserting holes for inserting the fixing pin are formed in the dismounting and mounting ring and the valve disc; the fixing device can fix the valve nut of the valve element, the dismounting and mounting device can be fixed with the valve disc, and the valve disc is dismounted from or screwed on the valve nut by rotating the dismounting and mounting device, so that the valve element is dismounted or mounted.

Description

Technical Field

[0001] The utility model relates to the technical field of disassembly and assembly devices, in particular to a disassembly and assembly device for a high-pressure regulating valve core of a steam turbine unit. Background Art

[0002] At present, thermal power plants have a major overhaul cycle of every five years. As an important steam inlet regulating valve of the steam turbine, the steam valve plays a crucial role. During the major overhaul, the steam valve needs to be disassembled and inspected. Due to serious internal oxide scale formation after years of operation, it is difficult to disassemble and assemble the high-pressure regulating valve core of the steam turbine unit, and it is very likely to damage the valve core during the disassembly and assembly process. Summary of the Utility Model

[0003] The main purpose of the utility model is to provide a disassembly and assembly device for a high-pressure regulating valve core of a steam turbine unit, so as to solve the problems in the prior art that it is difficult to disassemble and assemble the high-pressure regulating valve core of the steam turbine unit, and it is very likely to damage the valve core during the disassembly and assembly process.

[0004] To achieve the above purpose, the utility model provides a disassembly and assembly device for a high-pressure regulating valve core of a steam turbine unit, including a valve core, which includes a valve stem, a valve nut sleeved outside the valve stem, and a valve disc. The valve nut and the valve disc are threadedly connected. It further includes a fixing device for fixing the valve nut and a disassembly and assembly device for disassembling and assembling the valve disc. The disassembly and assembly device includes a disassembly and assembly ring for sleeving outside the valve disc, a fixing pin for fixing the valve disc and the disassembly and assembly ring. A knocking ear is fixedly arranged on the outside of the disassembly and assembly ring, and jacks for inserting the fixing pin are arranged on both the disassembly and assembly ring and the valve disc.

[0005] Further, the fixing device includes a base, two vertical rods are fixedly connected to the base, and a limiting protrusion for limiting the valve disc is fixedly connected to the side of the vertical rods close to each other. A convex ring is fixedly arranged at the position of the valve nut close to the valve disc, and a notch for cooperating with the limiting protrusion is arranged on the convex ring.

[0006] Further, a pressing plate for limiting the valve nut is slidably connected to the vertical rod, and a limiting nut for limiting the pressing plate is threadedly connected to the top of the vertical rod.

[0007] Further, a convex head is arranged at the end of the valve stem, and the valve nut and the valve disc jointly wrap the valve disc.

[0008] The fixing device of the utility model can fix the valve nut of the valve core, and the disassembly and assembly device can be fixed to the valve disc, and the valve disc is removed from or screwed onto the valve nut by rotating the disassembly and assembly device, so as to disassemble or install the valve core. Brief Description of the Drawings

[0009] The specification drawings constituting a part of this application are used to provide a further understanding of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an improper limitation to the utility model.

[0010] Figure 1 Schematic structural diagram of the cut-away valve stem in the embodiment;

[0011] Figure 2 Schematic structural diagram of the connection between the fixing device and the valve nut in the embodiment;

[0012] Figure 3 Schematic structural diagram of the connection between the disassembly device and the valve disc in the embodiment.

[0013] In the figure: 1, valve core; 101, valve stem; 102, convex head; 103, valve nut; 104, valve disc; 105, convex ring; 2, fixing device; 201, base; 202, vertical rod; 203, limit projection; 204, limit nut; 205, pressing plate; 3, disassembly and assembly device; 301, disassembly and assembly ring; 302, fixing pin; 303, knocking ear. Specific embodiments

[0014] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0015] As Figures 1 to 3 shown, according to an embodiment of the present invention, there is provided a disassembly and assembly device for the high-pressure regulating valve core of a steam turbine unit, including a valve core 1, the valve core 1 includes a valve stem 101, a valve nut 103 sleeved outside the valve stem 101 and a valve disc 104, and the valve nut 103 and the valve disc 104 are threadedly connected; a convex head 102 is provided at the end of the valve stem 101, and the valve nut 103 and the valve disc 104 jointly wrap the valve disc 104.

[0016] It further includes a fixing device 2 for fixing the valve nut 103 and a disassembly and assembly device 3 for disassembling and assembling the valve disc 104. The disassembly and assembly device 3 includes a disassembly and assembly ring 301 for sleeving outside the valve disc 104, a fixing pin 302 for fixing the valve disc 104 and the disassembly and assembly ring 301. A knocking ear 303 is fixedly provided on the outside of the disassembly and assembly ring 301, and insertion holes for the fixing pin 302 to insert are provided on both the disassembly and assembly ring 301 and the valve disc 104.

[0017] The fixing device 2 includes a base 201, two vertical rods 202 are fixedly connected to the base 201, and a limit projection 203 for limiting the valve nut 103 is fixedly connected to the side of the vertical rods 202 close to each other; a convex ring 105 is fixedly provided at a position of the valve nut 103 close to the valve disc 104, and a notch for cooperating with the limit projection 203 is provided on the convex ring 105.

[0018] A pressing plate 205 for limiting the valve disc 104 is slidably connected to the vertical rod 202, and a limit nut 204 for limiting the pressing plate 205 is threadedly connected to the top of the vertical rod 202.

[0019] The fixing device of this embodiment can fix the valve nut 103 of the valve core 1, and the disassembly and assembly device 3 can be fixed to the valve disc 104. By using a hammer to strike the striking ear 303, the disassembly and assembly device can be rotated, so as to remove or screw on the valve disc 104 from the valve nut 103, thereby disassembling or installing the valve core 1.

[0020] This embodiment can disassemble the valve core 1 without damaging the valve core 1. After disassembly, each component part of the valve core 1 is inspected, and the damaged parts are replaced, and the qualified parts are continued to be used.

[0021] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A steam turbine high-pressure regulating valve core disassembly and assembly device, comprising a valve core (1), the valve core (1) comprising a valve stem (101), a valve nut (103) sleeved on the outside of the valve stem (101), and a valve disc (104), the valve nut (103) and the valve disc (104) being threadedly connected; characterized in that: It also includes a fixing device (2) for fixing the valve nut (103) and a disassembling device (3) for disassembling the valve disc (104), the disassembling device (3) including a disassembling ring (301) for sleeved on the outside of the valve disc (104), and a fixing pin (302) for fixing the valve disc (104) and the disassembling ring (301), a knocking ear (303) is fixedly provided on the outside of the disassembling ring (301), and a socket for inserting the fixing pin (302) is provided on both the disassembling ring (301) and the valve disc (104).

2. The steam turbine unit high pressure regulating valve core disassembly and assembly device according to claim 1, characterized in that: The fixing device (2) comprises a base (201), two vertical rods (202) are fixedly connected to the base (201), and a limiting protrusion (203) for limiting the valve disc (104) is fixedly connected to the side of the vertical rods (202) close to each other; a convex ring (105) is fixedly provided at a position close to the valve disc (104) on the valve nut (103), and a notch is provided on the convex ring (105) for matching with the limiting protrusion (203).

3. The steam turbine unit high pressure regulating valve core disassembly and assembly device according to claim 2, characterized in that: A pressure plate (205) for limiting the position of the valve nut (103) is slidably connected to the vertical rod (202), and a limiting nut (204) for limiting the position of the pressure plate (205) is threadedly connected to the top of the vertical rod (202).

4. The steam turbine unit high pressure regulating valve core disassembly and assembly device according to claim 1, characterized in that: A convex head (102) is provided at the end of the valve stem (101), and the valve nut (103) and the valve disc (104) together wrap the valve disc (104).

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